הֶ֣בֶל הֵ֔מָּה מַעֲשֵׂ֖ה תַּעְתֻּעִ֑ים בְּעֵ֥ת פְּקֻדָּתָ֖ם יֹאבֵֽדוּ׃
They are vanity, a work of delusion; In the time of their visitation they shall perish,
Rashi on Jeremiah
at the time of their visitation When the Holy One, blessed be He, visits retribution upon them and upon their worshippers.